Irregular IR Verbs (1/3)
Spanish: Edexcel IGCSE, topic 10.5.9
Radically Changing IR Verbs (O → UE, (E → IE), (E → I)
Verbs that have radical changing stems in the present tense are also radically changing in the present subjunctive. In the 'nosotros' and 'vosotros' forms these verbs drop the ‘e’. Here are a couple of examples:

Dormir
- Duerma - I sleep.
- Duermas - you sleep.
- Duerma - he/she sleeps.
- Durmamos - we sleep.
- Durmáis - you sleep.
- Duerman - they sleep.

Sentir
- Sienta - I feel.
- Sientas - you feel.
- Sienta - he/she feels.
- Sintamos - we feel.
- Sintáis - you feel.
- Sientan - they feel.

Pedir
- Pida - I ask.
- Pidas - you ask.
- Pida - he/she asks.
- Pidamos - we ask.
- Pidáis - you ask.
- Pidan - they ask.
Adding a 'G'
Some IR verbs in the present tense 'yo' form add a 'g' to their stem. The ‘yo form’ of the present tense without the ‘o’ acts as the stem for the present subjunctive.

'Salir'
- Salga - I go out.
- Salgas - you go out.
- Salga - he/she goes out.
- Salgamos - wego out.
- Salgáis - you go out.
- Salgan - they go out.

'Decir'
- Diga - I say.
- Digas - you say.
- Diga - he/she says.
- Digamos - we say.
- Digáis - you say.
- Digan - they say.
Test yourself on Irregular IR Verbs (1/3)
How do you say 'we ask' in the present subjunctive in Spanish?
How do you say 'you (plural) say' in the present subjunctive in Spanish?